Acquisition of Two Gas Source Stable Isotope Ratio Mass Spectrometers for the Stable Isotope Research Facility (SIRF) at Indiana University

1028102 Ripley该合同在24个月内提供300，000美元的总资金，用于为稳定同位素研究设施（SIRF）购买两台气体源同位素比质谱仪（IRMS）系统。这些仪器将取代现有的故障仪器。这些仪器将用于岩石学和矿石成因、地质微生物学、行星过程、水-岩石相互作用、环境评估、大气科学和考古学。该仪器将支持来自化学，生物学，地理/大气科学，考古学和公共和环境事务学院的教师，以及管理SIRF的地质科学系。此外，外部用户（过去三年约80个）也使用了该设施。SF6气体分析需要一台能同时测量四束离子的仪器。需要一种更标准的仪器，用于氧、碳和氮同位素分析。SIRF在印第安纳州大学和外部机构都有用户。学生使用率也很高。SIRF为学生提供实践培训。培训包括样品制备和仪器操作。PI和co-PI已经管理SIRF超过20年。这两个PI在指导代表性不足的研究生方面都有很强的背景。这些仪器将安置在现有的SIRF空间内。该机构有两名全职技术研究人员。技术员的薪金、用品和维修费来自赠款支助和外部用户费。***

1028102RipleyThis award provides $300,000 in total funding over 24 months to acquire two gas-source isotope ratio mass spectrometers (IRMS) systems for the Stable Isotope Research Facility (SIRF). The instruments will replace current failing ones. The instruments will be used for petrology and ore genesis, geomicrobiology, planetary processes, water-rock interaction, environmental assessment, atmospheric science and archaeology. The instrumentation will support faculty from Chemistry, Biology, Geography/Atmospheric Sciences, Archaeology and the School of Public and Environmental Affairs in addition to the Department of Geological Sciences which manages the SIRF. In addition, outsider users (~ 80 in the past three years) have utilized the facility. An instrument capable of four ion beams simultaneous measurement is requested for SF6 analysis. A more standard instrument is requested which will be used for oxygen, carbon, and nitrogen isotope analysis. The SIRF has users both at Indiana University and outside institutions. Student use is also high. The SIRF provides hands-on training for students. Training includes sample prep and instrument operation. The PI and co-PI have managed the SIRF for more than 20 years. Both Pis have a strong background in advising underrepresented graduate students. The instruments will be housed in the existing SIRF space. The facility has two full-time technical researchers. Technician salary, supplies and maintenance come from grant support and external user fees. ***